PROBLEM TO BE SOLVED: To provide a suction fan structure having a suction fan placed in a manner to form an open space between the fan and a shake sorting mechanism placed below, capable of effectively preventing the intrusion of unnecessary materials from outside through the open space and effective for improving the efficiency of assembling work and maintenance work.SOLUTION: The lower fan cover member to cover the lower part of a suction fan is provided with a main body member and a rigid shielding member attached to the main body member at the base end of the shielding member and extending the free end downward to the back of the vehicle, and the main body member is detachably attached to the vehicle body in a state supporting the rigid shielding member. Preferably, the lower fan cover member is provided with an elastic shielding member attached its base end to the main body member in a manner to shield at least a part of the open space at the front side of the vehicle relative to the rigid shielding member, and the main body member is detachably attached to the vehicle body in a state supporting the elastic shielding member and the rigid shielding member.COPYRIGHT: (C)2007,JPO&INPIT【課題】下方に位置する揺動選別機構との間に開口空間が形成されるように配設される吸引ファンを備えた吸引ファン構造であって、前記開口空間を介して機外から不要物が混入することを有効に防止ことができ、さらに、組立作業及びメンテナンス作業の効率化を図り得る吸引ファン構造を提供する。【解決手段】吸引ファンの下方を覆う下方ファンカバー部材は、本体部材と、基端部が前記本体部材に装着され且つ自由端部が車輌後方且つ下方へ延びる剛性遮閉部材とを有し、前記本体部材は前記剛性遮閉部材を支持した状態で車輌本体側に着脱可能とされている。好ましくは、前記下方ファンカバー部材に、前記剛性遮閉部材よりも車輌前方側において前記開口空間の少なくとも一部を遮閉するように基端部が前記本体部材に装着された弾性遮閉部材を備え、前記本体部材は前記弾性遮閉部材及び前記剛性遮閉部材を支持した状態で車輌本体側に着脱可能とされる。【選択図】図14
